Hanna Instruments

Scientific Equipment

Sulfite levels (measured as Na2SO3) need to be monitored in water applications such as boiler feed and effluent water, where the sulfite concentration must be maintained at about 20 mg/L to prevent oxidation or pitting of metal components. Sulfite ions are also toxic to aquatic life, so sulfite levels must be monitored in aquatic environments.


Hanna supply a variety of chemical test kits and automatic titrators suitable for measuring sulfite levels in water samples.